CN102510008B - High-speed circuit breaker mounting device and mounting method thereof - Google Patents
High-speed circuit breaker mounting device and mounting method thereof Download PDFInfo
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- CN102510008B CN102510008B CN201110311379.4A CN201110311379A CN102510008B CN 102510008 B CN102510008 B CN 102510008B CN 201110311379 A CN201110311379 A CN 201110311379A CN 102510008 B CN102510008 B CN 102510008B
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Abstract
The invention discloses a high-speed circuit breaker mounting device and a mounting method thereof. The device comprises a high-speed circuit breaker mounting plate, a high-speed circuit breaker mounting plate mounting bolt, a high-speed circuit breaker base mounting bolt, a base plate and a high-speed circuit breaker base, wherein the high-speed circuit breaker mounting plate is fixed and mounted between the high-speed circuit breaker base and a box framework of a high-speed circuit breaker mounting box; the high-speed circuit breaker mounting plate is fixed on the box framework through the high-speed circuit breaker mounting plate mounting bolt and a nut; the high-speed circuit breaker base is fixed on the high-speed circuit breaker mounting plate through the high-speed circuit breaker base mounting bolt, the base plate and the nut; the base plate is sleeved on the high-speed circuit breaker base mounting bolt and located between the high-speed circuit breaker base and the nut. By using the device and the mounting method, the problem that the product base of a high-speed circuit breaker of an urban railway system cracks in the processes of mounting, operation and maintenance is solved, and the technical defects that the original device is low in strength, large in mounting space and dismounting and maintenance are not convenient are overcome.
Description
Technical field
The present invention relates to high-speed rail transportation equipment and installation method thereof, especially relate to a kind of erecting device and the installation method thereof that are applied to urban track traffic electric traction system high-speed circuit breaker.
Background technology
In urban rail transit technology field, electric traction system product is generally lifted on vehicle bottom, and running environment is severe, and reliability requirement is high.High-speed circuit breaker, as the import device of city rail electric traction system core, is also core component extremely crucial in trailer system.At present, in the process that car operation and user are safeguarded, due to the particularity of this device own material, and it is coarse to the installation process Method compare of high-speed circuit breaker, often cause this device mounting seat to ftracture, potential safety hazard is brought to the normal operation of vehicle, affects it and normally use.This device involves great expense, and procurement cycle is long, as once occur that above-mentioned cracking phenomena brings inconvenience to the use of user.Be installed on the electric traction system product of field of urban rail, under lifting urban rail car body, higher reliability must be had.
When municipal rail train is run at high speed, the various aspects of performance of high-speed circuit breaker all needs to stablize, the operation of guarantee train smooth.But high-speed circuit breaker not make any installation safeguard measure be worthless, the high-speed circuit breaker mounting means used at present can not be adapted to the needs of most of project.Prior art has the material adopting epoxy material mounting panel as protection isolation on material is selected.Although serve certain protective effect to the base of high-speed circuit breaker, this reliability of material is not high, and production cost is high, complex manufacturing.If protect the base of high-speed circuit breaker with this mounting panel, then require very harsh to the spatial altitude aspect of high-speed circuit breaker installation casing, the entirety for high-speed circuit breaker is safeguarded very inconvenient.And the mounting panel strength of materials is lower, heavier-weight, can not adapt to the demand of modernization Development of High Speed Railway, is not suitable for using in the electrical appliance screen cabinet for a long time at the bottom of the city rail subway train car of operation at a high speed.Meanwhile, the installing space that high-speed circuit breaker mounting means needs is larger in short transverse size, and electric traction system product has strict demand to the size of short transverse under being lifted on car body.This installation direction is infeasible in short transverse bulk, and dismounting is safeguarded all inconvenient.
Therefore, in the urgent need to urban rail transit technology field is applied high-speed circuit breaker mounting device improve, to adapt to the requirement of modern city field of track traffic development, the high-speed circuit breaker mounting device that a kind of reliability of research and production is high, maintainable by force, easy accessibility, cost are low and installation method thereof become the problem that has urgency and important technology and economic worth.
Summary of the invention
The invention provides a kind of high-speed circuit breaker mounting device and installation method thereof, this device and installation method thereof solve the problem that ftractureing easily appears in urban track traffic electric traction system high-speed circuit breaker product base in installation, operation and maintenance process, overcome original high-speed circuit breaker mounting device intensity not high, installing space is large, and inconvenient technological deficiency is safeguarded in dismounting.
To achieve these goals, the invention provides a kind of technic relization scheme of high-speed circuit breaker mounting device, a kind of high-speed circuit breaker mounting device, comprise: high-speed circuit breaker mounting panel, high-speed circuit breaker mounting panel construction bolt, high-speed circuit breaker floor installation bolt, backing plate, high-speed circuit breaker base, high-speed circuit breaker mounting panel is fixedly mounted on high-speed circuit breaker base and high-speed circuit breaker is installed between the box frame of casing, high-speed circuit breaker mounting panel is fixed on box frame by high-speed circuit breaker mounting panel construction bolt and nut, high-speed circuit breaker base is by high-speed circuit breaker floor installation bolt, backing plate and nut are fixed on high-speed circuit breaker mounting panel, backing plate is through on high-speed circuit breaker floor installation bolt, and between high-speed circuit breaker base and nut.
As the further improvement of a kind of high-speed circuit breaker mounting device of the present invention technical scheme, high-speed circuit breaker mounting panel adopts thickness to be the corrosion resistant plate of 8-12mm, and surface smoothness is within 0.2mm.
As the further improvement of a kind of high-speed circuit breaker mounting device of the present invention technical scheme, the bolt head end of high-speed circuit breaker floor installation bolt, lower than the surface of high-speed circuit breaker mounting panel, sinks to the inside of high-speed circuit breaker mounting panel.
As the further improvement of a kind of high-speed circuit breaker mounting device of the present invention technical scheme, the bolt head end of high-speed circuit breaker mounting panel construction bolt is lower than the surface of high-speed circuit breaker mounting panel.
As the further improvement of a kind of high-speed circuit breaker mounting device of the present invention technical scheme, high-speed circuit breaker floor installation bolt adopts M8 or M10 high-strength bolt.
As the further improvement of a kind of high-speed circuit breaker mounting device of the present invention technical scheme, high-speed circuit breaker mounting panel construction bolt adopts flat head bolt or hex bolts.
As the further improvement of a kind of high-speed circuit breaker mounting device of the present invention technical scheme, high-speed circuit breaker mounting panel adopts composition to be SUS304(0Cr18Ni9) or the corrosion resistant plate material of 1CR18NI9TI or the higher general steel plate material of intensity, the electroplating surfaces with tin of high-speed circuit breaker mounting panel.
The present invention also provides a kind of specific implementation to the method that above-mentioned high-speed circuit breaker mounting device is installed, and the method comprises the following steps:
A. high-speed circuit breaker floor installation bolt is penetrated the installing hole of high-speed circuit breaker mounting panel;
B. high-speed circuit breaker mounting panel is fastened on box frame by high-speed circuit breaker mounting panel construction bolt;
C. high-speed circuit breaker floor installation bolt is penetrated the installing hole of high-speed circuit breaker base;
D. on high-speed circuit breaker floor installation bolt, overlap upper padding plate, backing plate is arranged between high-speed circuit breaker base and nut;
E. by nut, high-speed circuit breaker floor installation bolt is carried out fastening.
As the further improvement of a kind of high-speed circuit breaker of the present invention installation method technical scheme, when installing high-speed circuit breaker floor installation bolt, the bolt head of high-speed circuit breaker floor installation bolt is sunk to the inside of high-speed circuit breaker mounting panel.
As the further improvement of a kind of high-speed circuit breaker of the present invention installation method technical scheme, when installing high-speed circuit breaker mounting panel construction bolt, high-speed circuit breaker mounting panel construction bolt is arranged on the plane of its bolt head lower than high-speed circuit breaker mounting panel surface.
By a kind of high-speed circuit breaker mounting device described by application the invention described above and the technical scheme of installation method thereof; reach the technique effect effectively preventing high-speed circuit breaker base from ftractureing; the mounting panel production cost of this erecting device is lower simultaneously; production technology is simple; intensity is higher; lighter in weight, and use the mounting panel of this kind of structure to protect high-speed circuit breaker base requiring relative loose in screen cabinet height space.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The left side view of the high-speed circuit breaker mounting device assembly structure schematic diagram of Fig. 1 described by a kind of embodiment of the present invention;
The right side view of the high-speed circuit breaker mounting device assembly structure schematic diagram of Fig. 2 described by a kind of embodiment of the present invention;
The front view of the high-speed circuit breaker mounting device assembly structure schematic diagram of Fig. 3 described by a kind of embodiment of the present invention;
The vertical view of the high-speed circuit breaker mounting device assembly structure schematic diagram of Fig. 4 described by a kind of embodiment of the present invention;
The three-dimensional view of the high-speed circuit breaker mounting device assembly structure schematic diagram of Fig. 5 described by a kind of embodiment of the present invention;
The high-speed circuit breaker mounting device high-speed circuit breaker mounting panel construction bolt 2 of Fig. 6 described by a kind of embodiment of the present invention and the partial sectional view of high-speed circuit breaker floor installation bolt 3 junction;
Wherein, 1-high-speed circuit breaker mounting panel, 2-high-speed circuit breaker mounting panel construction bolt, 3-high-speed circuit breaker floor installation bolt, 4-backing plate, 5-high-speed circuit breaker base, 6-high-speed circuit breaker, 7-box frame.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in accompanying drawing 1 to accompanying drawing 6, give a kind of high-speed circuit breaker mounting device of the present invention and installation method thereof and be applied to the specific embodiment that in high speed urban track traffic subway train electrical cubicle, high-speed circuit breaker is installed, below in conjunction with the drawings and specific embodiments, the invention will be further described.
High-speed circuit breaker mounting device as shown in Figures 1 to 5 comprises five parts, is respectively high-speed circuit breaker mounting panel 1, high-speed circuit breaker mounting panel construction bolt 2, high-speed circuit breaker floor installation bolt 3, backing plate 4, high-speed circuit breaker base 5.High-speed circuit breaker 6 is arranged on high-speed circuit breaker base 5.As the typical execution mode of one, high-speed circuit breaker mounting panel 1 is that the general steel plate materials processing that the corrosion resistant plate of 10mm or intensity are higher forms by thickness, as: material is SUS304(0Cr18Ni9) or the corrosion resistant plate material of 1CR18NI9TI 10.Meanwhile, within the surface smoothness of high-speed circuit breaker mounting panel 1 reaches 0.2mm, and adopt electroplating surfaces with tin, prevent surface oxidation.High-speed circuit breaker floor installation bolt 3 adopts M8 or M10 high-strength bolt, is fixed on high-speed circuit breaker mounting panel 1 by high-speed circuit breaker base 5 by high-speed circuit breaker floor installation bolt 3.High-speed circuit breaker mounting panel construction bolt 2 is flat head bolt or hex bolts, by high-speed circuit breaker mounting panel construction bolt 2, high-speed circuit breaker mounting panel 1 is fixed on high-speed circuit breaker and installs on the box frame 7 of casing.
Under the environment that municipal rail train is runed at a high speed, the vibration being positioned at the High-Voltage Electrical Appliances screen cabinet bottom train aggravates along with the acceleration vibration of train.A main purpose of the present invention is exactly to prevent because train vibration causes High-Voltage Electrical Appliances to shield cabinet vibration, and the cracking causing high-speed circuit breaker base 5 to vibrate further and bring.Such object is that the technical scheme by being fastened on high-speed circuit breaker mounting panel 1 by high-speed circuit breaker floor installation bolt 3 and backing plate 4 by high-speed circuit breaker base 5 is reached.There is provided certain clamping force by high-speed circuit breaker floor installation bolt 3, serve and prevent high-speed circuit breaker base 5 from ftractureing, and the effect of fastening high-speed circuit breaker base 5.Within the surface smoothness of high-speed circuit breaker mounting panel 1 and backing plate 4 can reach 0.2mm, therefore, it is possible to ensure the evenness of high-speed circuit breaker base 5 installed surface well.Here it should be noted that, backing plate 4 can not adopt conventional packing ring to replace.Backing plate 4 employing described in embodiment has the long-pending backing plate square with holes of certain surface, is mainly used in increasing the contact area with high-speed circuit breaker base 5, thus reaches the lifting surface area increasing high-speed circuit breaker base 5 and high-speed circuit breaker mounting panel 1.This makes it possible to the cracking preventing from further causing because high-speed circuit breaker base 5 sharply vibrates.As shown in Figure 6, high-speed circuit breaker floor installation bolt 3 adopts M8 or M10 high-strength bolt, the bolt head of high-speed circuit breaker floor installation bolt 3 sinks to the inside of high-speed circuit breaker mounting panel 1, such design can guarantee that between high-speed circuit breaker mounting panel 1 and high-speed circuit breaker base 5, installed surface is in same plane, high-speed circuit breaker 6 being installed more steady, preventing high-speed circuit breaker base 5 from ftractureing because shaking further.High-speed circuit breaker 6 is when needing repairing, and installation and removal process is convenient, only needs the nut unclamping high-speed circuit breaker floor installation bolt 3 just related for whole high-speed circuit breaker base 5 high-speed circuit breaker 6 can be separated together.High-speed circuit breaker mounting panel construction bolt 2 is flat head bolt or hex bolts, and the Main Function of high-speed circuit breaker mounting panel construction bolt 2 is assemblies of fixing whole high-speed circuit breaker mounting panel 1, high-speed circuit breaker base 5 and high-speed circuit breaker 6 composition.High-speed circuit breaker mounting panel construction bolt 2 is after fastening, and the bolt head end of high-speed circuit breaker mounting panel construction bolt 2 lower than the surface of high-speed circuit breaker mounting panel 1, can not should have an impact to the installation of high-speed circuit breaker base 5 like this.
Above-mentioned high-speed circuit breaker mounting device can be fixed when municipal rail train is runed at a high speed reliably and protect high-speed circuit breaker.High-speed circuit breaker mounting panel 1 adopts the corrosion resistant plate of 8-12mm to process, and can bear the weight of high-speed circuit breaker itself, and the vibration produced in operation process and impulsive force.Simultaneously; get around in the past loaded down with trivial details production technology; release the space requirement of high-speed circuit breaker at vertical direction; it is dual fastening that employing utilizes bolt to carry out from positive and negative both direction; can buffering vibration power and impulsive force effectively; effective protection high-speed circuit breaker base, keeps in repair high-speed circuit breaker easily and quickly.And reduce production cost, and save preventive maintenance time.
In the middle of installation process, because the bottom of installing casing at high-speed circuit breaker oppositely hung by the feet by whole high-speed circuit breaker, therefore the installation method of high-speed circuit breaker mounting device comprises the following steps:
A. high-speed circuit breaker floor installation bolt 3 is penetrated the installing hole of high-speed circuit breaker mounting panel 1 towards the direction going deep into high-speed circuit breaker base 5;
B. be fastened on box frame 7 by high-speed circuit breaker mounting panel 1 by high-speed circuit breaker mounting panel construction bolt 2, high-speed circuit breaker mounting panel construction bolt 2 passes high-speed circuit breaker mounting panel 1 towards the direction away from high-speed circuit breaker base 5;
C. high-speed circuit breaker floor installation bolt 3 is penetrated the installing hole of high-speed circuit breaker base 5 towards the direction going deep into high-speed circuit breaker base 5;
D. on high-speed circuit breaker floor installation bolt 3, overlap upper padding plate 4, backing plate 4 is arranged between high-speed circuit breaker base 5 and nut;
E. by nut, high-speed circuit breaker floor installation bolt 3 is carried out fastening.
When installing high-speed circuit breaker floor installation bolt 3, the surface of bolt head end lower than high-speed circuit breaker mounting panel 1 of high-speed circuit breaker floor installation bolt 3 should be ensured, the bolt head of high-speed circuit breaker floor installation bolt 3 is sunk to the inside of high-speed circuit breaker mounting panel 1.
When installing high-speed circuit breaker mounting panel construction bolt 2, high-speed circuit breaker mounting panel construction bolt 2 should be ensured to be arranged on the plane of its bolt head end lower than high-speed circuit breaker mounting panel 1 surface.
The high-speed circuit breaker mounting panel production technology that can reach high-speed circuit breaker mounting device requirement of strength of the present invention is very simple, and whole technological process only comprises: blanking-Milling Machining-electroplating surfaces with tin three process.Can find out that the technological process of production of high-speed circuit breaker mounting panel 1 is simple according to above-mentioned technological process, get around loaded down with trivial details technological process, be a kind of very practical invention, significantly reduce production cost.
Wherein, for high-speed circuit breaker mounting panel 1, its requirement chosen can meet high-speed circuit breaker to install and requirement of strength, and thickness is all alternative at the mounting panel of about 10mm.
High-speed circuit breaker floor installation bolt 3, its requirement chosen be can meet installation, intensity and torque requiremnt bolt all alternative.
High-speed circuit breaker mounting panel construction bolt 2, its requirement chosen be can meet installation, intensity and torque requiremnt bolt all alternative.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent replacement, equivalence change and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (9)
1. a high-speed circuit breaker mounting device, it is characterized in that: comprise high-speed circuit breaker mounting panel (1), high-speed circuit breaker mounting panel construction bolt (2), high-speed circuit breaker floor installation bolt (3), backing plate (4), high-speed circuit breaker base (5), high-speed circuit breaker mounting panel (1) is fixedly mounted on high-speed circuit breaker base (5) and high-speed circuit breaker is installed between the box frame (7) of casing, high-speed circuit breaker mounting panel (1) is fixed on box frame (7) by high-speed circuit breaker mounting panel construction bolt (2) and nut, high-speed circuit breaker base (5) is by high-speed circuit breaker floor installation bolt (3), backing plate (4) and nut are fixed on high-speed circuit breaker mounting panel (1), backing plate (4) is through on high-speed circuit breaker floor installation bolt (3), and be positioned between high-speed circuit breaker base (5) and nut, the bolt head end of described high-speed circuit breaker floor installation bolt (3), lower than the surface of high-speed circuit breaker mounting panel (1), sinks to the inside of high-speed circuit breaker mounting panel (1).
2. a kind of high-speed circuit breaker mounting device according to claim 1, is characterized in that: described high-speed circuit breaker mounting panel (1) adopts thickness to be the corrosion resistant plate of 8-12mm, and surface smoothness is within 0.2mm.
3. a kind of high-speed circuit breaker mounting device according to claim 1 and 2, is characterized in that: the bolt head end of described high-speed circuit breaker mounting panel construction bolt (2) is lower than the surface of high-speed circuit breaker mounting panel (1).
4. a kind of high-speed circuit breaker mounting device according to claim 3, is characterized in that: described high-speed circuit breaker floor installation bolt (3) adopts M8 or M10 bolt.
5. a kind of high-speed circuit breaker mounting device according to claim 4, is characterized in that: described high-speed circuit breaker mounting panel construction bolt (2) adopts flat head bolt or hex bolts.
6. a kind of high-speed circuit breaker mounting device according to claim 5, it is characterized in that: described high-speed circuit breaker mounting panel (1) employing composition is corrosion resistant plate material or the general steel plate material of 0Cr18Ni9 or 1CR18NI9TI, the electroplating surfaces with tin of described high-speed circuit breaker mounting panel (1).
7., to the method that the high-speed circuit breaker mounting device described in claim arbitrary in claim 1 to 6 is installed, it is characterized in that: comprise the following steps:
A. high-speed circuit breaker floor installation bolt (3) is penetrated the installing hole of high-speed circuit breaker mounting panel (1);
B. high-speed circuit breaker mounting panel (1) is fastened on box frame (7) by high-speed circuit breaker mounting panel construction bolt (2);
C. high-speed circuit breaker floor installation bolt (3) is penetrated the installing hole of high-speed circuit breaker base (5);
D. on high-speed circuit breaker floor installation bolt (3), overlap upper padding plate (4), backing plate (4) is arranged between high-speed circuit breaker base (5) and nut;
E. by nut, high-speed circuit breaker floor installation bolt (3) is carried out fastening.
8. a kind of method that high-speed circuit breaker mounting device is installed according to claim 7, it is characterized in that: when installing high-speed circuit breaker floor installation bolt (3), the bolt head of high-speed circuit breaker floor installation bolt (3) is sunk to the inside of high-speed circuit breaker mounting panel (1).
9. a kind of method that high-speed circuit breaker mounting device is installed according to claim 8, it is characterized in that: when installing high-speed circuit breaker mounting panel construction bolt (2), high-speed circuit breaker mounting panel construction bolt (2) being arranged on the plane of its bolt head end lower than high-speed circuit breaker mounting panel (1) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110311379.4A CN102510008B (en) | 2011-10-14 | 2011-10-14 | High-speed circuit breaker mounting device and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110311379.4A CN102510008B (en) | 2011-10-14 | 2011-10-14 | High-speed circuit breaker mounting device and mounting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102510008A CN102510008A (en) | 2012-06-20 |
| CN102510008B true CN102510008B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110311379.4A Active CN102510008B (en) | 2011-10-14 | 2011-10-14 | High-speed circuit breaker mounting device and mounting method thereof |
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| CN (1) | CN102510008B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113314955B (en) * | 2021-04-21 | 2022-03-29 | 株洲中车时代电气股份有限公司 | Mounting screen cabinet for high-speed circuit breaker and dismounting method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296073Y (en) * | 1996-06-14 | 1998-10-28 | 三菱电机株式会社 | Electric circuit breaker |
| CN2847640Y (en) * | 2005-12-06 | 2006-12-13 | 温州市长虹电气成套有限公司 | Resistance-capacitance overvoltage absorber |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000191249A (en) * | 1998-12-24 | 2000-07-11 | Hitachi Building Systems Co Ltd | Modifying method for control board of elevator |
| JP2011165514A (en) * | 2010-02-10 | 2011-08-25 | Kawamura Electric Inc | Circuit breaker |
-
2011
- 2011-10-14 CN CN201110311379.4A patent/CN102510008B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296073Y (en) * | 1996-06-14 | 1998-10-28 | 三菱电机株式会社 | Electric circuit breaker |
| CN2847640Y (en) * | 2005-12-06 | 2006-12-13 | 温州市长虹电气成套有限公司 | Resistance-capacitance overvoltage absorber |
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| CN102510008A (en) | 2012-06-20 |
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Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee after: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. Address before: 412001 Hunan Province, Zhuzhou Shifeng District Tian Xin era Road No. 169 Patentee before: ZHUZH CSR TIMES ELECTRIC Co.,Ltd. |
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